Difference between revisions of "Check Files 1d WLLo"

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This GIS check file contains the locations of the 1D Water Level Line objects.  The [[Check_Files_1d_WLLp | 1d_WLLp Check File]] contains information about the water level line point objects.<br>
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'''Attributes of WLLo_check'''<br>
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{| align="center" class="wikitable" width="75%"
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! style="background-color:#005581; font-weight:bold; color:white;"| Attribute Name
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! style="background-color:#005581; font-weight:bold; color:white;" width=75%| Attribute Description
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|-
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| Dist_for_Add_Points||The minimum distance interval along the WLL to generate elevation and material sampling points (WLL Points).  These points form the corners of the triangulation.
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|-
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| Upstream_Node||The ID of the upstream node.
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|-
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| Downstream_Node||The ID of the downstream node.
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|-
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| Weight_to_US_Node||The weighting to the upstream node.  For locations between nodes, the water level is taken as a linear interpolation between the upstream and downstream water levels.  This interpolation is based on the distance to the US and DS nodes.  For example a water level line that is exactly halfway between the US and DS nodes with have a weighting of 0.5.  If the nodes are 100m apart and the WLL is 10m from the US node and therefore 90m from the DS node will have a weighting to US node of 0.9. (90% of the WL is from the US node and 10% from the DS node).
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|-
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| Upstream_Channel||The channel upstream of the WLL, for a WLL snapped to a node this is the primary upstream channel.  For a WLL partway along a channel this is the channel ID the WLL is connected to.
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|-
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| Downstream_Channel||The channel downstream of the WLL, for a WLL snapped to a node this is the primary downstream channel.  For a WLL partway along a channel this is the channel ID the WLL is connected to.
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|}

Latest revision as of 16:55, 22 June 2015

This GIS check file contains the locations of the 1D Water Level Line objects. The 1d_WLLp Check File contains information about the water level line point objects.

Attributes of WLLo_check

Attribute Name Attribute Description
Dist_for_Add_Points The minimum distance interval along the WLL to generate elevation and material sampling points (WLL Points). These points form the corners of the triangulation.
Upstream_Node The ID of the upstream node.
Downstream_Node The ID of the downstream node.
Weight_to_US_Node The weighting to the upstream node. For locations between nodes, the water level is taken as a linear interpolation between the upstream and downstream water levels. This interpolation is based on the distance to the US and DS nodes. For example a water level line that is exactly halfway between the US and DS nodes with have a weighting of 0.5. If the nodes are 100m apart and the WLL is 10m from the US node and therefore 90m from the DS node will have a weighting to US node of 0.9. (90% of the WL is from the US node and 10% from the DS node).
Upstream_Channel The channel upstream of the WLL, for a WLL snapped to a node this is the primary upstream channel. For a WLL partway along a channel this is the channel ID the WLL is connected to.
Downstream_Channel The channel downstream of the WLL, for a WLL snapped to a node this is the primary downstream channel. For a WLL partway along a channel this is the channel ID the WLL is connected to.